Update README.md

Update README.md

Update feature_extraction.py

done

Merge pull request #2 from sgzeng/yz-dev

yz klr, no results

Merge pull request #1 from sgzeng/mingchen-dev

[19.06.04] change @ to np.matmul for python 2 support, use first 5 features and achieve 0.136 error, 0.8355 score

[19.06.04] 94% using first 5 features, 0.922 evaluation score

[19.06.04] NN:0.11~0.12 error

[19.6.4] logistic regression and kernel trick, 87% acc on lr, kernel doesn't work, try NN

merge CSV

mergeCSV

add pca scripts

doc dir